This might be related to the variable idle RPM. Is there a behavioural difference between a cold and a warm engine?
I started with the engine cold, but on an Warm ambient temperature. I tried to heat the engine up by driving on the rollers with brakes on. With the cold engine, no creep, but when the engine warmed up to about 55° the creep returned, although not really smooth. Overall the idle is jerky, and so is the creep in extension. Tested today the engine warmth thing
By "Cherrier 9 speed" you mean the behaviour, the gear ratios, or the mere fact that it is a 9 speed? Because the bahaviour is about the same (other than the shift points, that are dependent of the engine) as the Bastion's 8 speed auto, i.e. a bit smoother than the ETK's. Although the Torque Converter is very different. If you want a 9G-tronic equivalent, It can be done, but unnoficially.